Absorption befbigerating-machine



T. J. KIRN.

ABSORPTION REPRIGERATING MACHINE.

4 APPLICATION FILED AUG. 29, 1908.

925,920. Patented June 22, 1909.

3 SHEETS-SHEET 1.

Q! E g wcau u uoa v aanonxvym NVENTOR THEcm DRE Tl KERN ATTORNEYS T. J. KIRN.

ABSORPTION REPRIGERATING MACHINE.

APPLICATION FILED AUG. 29, 1908. I

Patented June 22, 1909.

3 SHEETS-SHEET 2.

IQQN m gun INVENTOI? THEun DRE LT. KIRK WITNESSES A TTOHNE YS T. J. KIRN.

ABSORPTION REFRIGBRATING MACHINE.

'THEu]: DRE t]. KIRN;

A TTOHNE Y S UNITED STATES PATENT OFFICE.

, THEODORE J1 KIRN, OF LOUISVILLE, KENTUCKY.

ABSORPTION RE FRIGERATIN G-KAGHIN E To all whom 'it may concernf Beit known that'I, THEODORE J. KIRN, a citizen of the United States, and a resident of Louisville, in the county of Jefferson and State of Kentucky, have made certain new and useful Improvements in Absorption Refrigerating-Machines, of which the followmg is a specification.

refrigerating machines, and more particularly to that class which is known as abj sorption refrigerating machines, in which ammonia gas is separated by heat from a ua ammonia, condensed by pressure, and coo ed into li uid condition. The subsequent change from t e liquid form into the gaseous form abstracts heat and produces. a lower temperature in the. refrigerating coils, or in substances in the immediate vicinity of the cooling agent. Heretofore, the devices of this kind, in which the ammonia is derived by heating the aqua ammonia in a still or generator, difficulty has been encountered-in obtaining the ammonia in the anhydrous form on account of the tendency for the steam, which is generated at the same time, to pass over with the ammonia, thereby diluting it and rendering it less efficient for cooling Ipurposes.

0 {pct of my invention is to provide a devlce w ich', while freeing the ammonia gas from the moisture contained therein and re- 1 dehydrater.

turning the latter to the generator, acts at the same time as an economizer of heat by preheating the aqua ammonia, before it is returned to the generator, so that the latter 1s raised to a considerable temperature and therefore does not require the same amount of heat to drive off its ammonia that it otherwise would. Other objects and advantages will appear in the following specification and will be pare ticular ly pointed out in the annexed clalms.

'My invention is illustrated in the accompanymg drawings, in which- Figure 1 is a diagrammatic view of a refrigerating plant provided with my improved Fig. 2 is a plan view of the dehydrator. Fig. 3 is a sectional view of the dehydrater. Fig. 4' is anend view. Figs.

5 and .6 are detail side views of the ribbed l plates. F igs'. 7 and 8 are detail views of the Specification of. Letters Patent. Application filed August 29, 1908. Serial No. 450,799.

latter gas-tight.

ings in the heads 5 are the pipes7. These Patented June22, 1909.

baflles, and Fi 9 is a sectional view of the baffle shown in ig. 7. v Referring now to Figs. 2 and 3 I have shown therein a horizontal cylinder 1, suspended by means of the bands or straps 2 in the center of a casing 3, the latter constitutmg a water-jacket and being provided with water-tight heads 4 having openings at their My invention relates to improvements in ends to permit the passage of the horizontal cylinder 1. These heads are provided with suitable packing and are arranged to be securely fastened to the casing 3 so as to prevent any leakage; The horizontal cylinder 1 is also provided with heads 5, which are arranged to be bolted to the outwardly extending flanges 6 on the cylinder 1 to render the Extending through openipes consist merely of four cylindrical memliers joined to form one continuous coil. The manner in which this coil is supported within the cylinder 1 may be seen by reference to Fig. 3 in connection with Figs. 7 and 8. This is accomplished by means of a series of plates 8, extending transversely of the cylinder 1 and constituting a series of baflies as well as supporting and spacing members. These baflles are made in sections as clearly shown in Figs. 7 and 8, which can be bolted together by means of the bolts 9. One series of plates is designed to extend upwardly from the bottom of the cylinder, while the other series projects downwardly from the top of the cylinder. The baffle plates 8 are provided with openings lO, through which the pipes of the coil 11 are adapted to pass. In assembling these parts the sections of the baflies are bolted around the pipes in the manner clearly understoodby reference to Figs. 7 and 8. The downwardly extending baffle plate s shown in Fig. 7, while the upwardly extendmg plate is shown in Fig. 8. At one end of the c 1111- der 1 there is arranged a series of r1 bed lates 12, which also form a series of baffles. lhese plates are closer together than the baffies heretofore mentioned and are provided with a series of ribs designed to form obstructing surfaces to the passage of water, thereby affording an efficient heat extractor. These lates .are clamped together by means of the binding rods 13, which pass through openings 14 at the upper and lower edges of the plates,

- frigeratini plant.

and are held by nuts on their ends. A ipe 16 enters the top of the open water- Jacket 3,."while the pipe 17 furmshesan overflow exit for the water. "In orderto support the cylinder and the surroundmg waterthe gas is driven up to the to of the generacate y seen that owing to thebafiies 8, this is a zigtor-and passes by means of t e pipe 19 into one end of the cylinder 1. The course that the gas takes through-this cylinder is indiin Fig. 3 by the arrows. It wilLbe zag path, the gas being forced over and around the pipes 7 in an effort to'reach the other end of the cylinder. The pi es 7, as will be shown hereinafter, are supp ied with cold aqua ammoniaand the contact of the hot gas with the moisture therein causes a precipitation of the latter and a heating of the aqua ammonia in the pipes. ,The gas asses the battles 12 at the end of the cylin er 1, and since these bafiies'have large radiating 'surafces, the gas 'is-still further cooled, the moisture therein condensing-ton] theplates and running to the bottom of the cylinder and out through the pipe35. The gas is now. 99% pure. he gas in the mean time-is forced through the exit pipe 20 into the condenser 21, where it is condensed to a liquid form, by the cooling action of a stream of water. From thence the anhydrous ammonia in liquidform flows down by means of the pipes 22 to the expansion coils 23, where itmay be used for cooling these coils, orfor any other purpose, such as making ice. The coolin effect is accomplished by the change of the uid to a gaseous form, the gas then passing y means of the pipe 24 to the water cooler 25, and thence into the absorber 26.

From here it is forced by means of the pump 27 through the pipe 28 into the'coil 7 1n the cylinder 1, where its coolingacti'on tends to condense the moisture in the gas as already described. Returning throng the ipe 29, the aqua ammonia passes through t e inner pipes of the exchanger30, which is of double pipe construction, and from thence it is forced through the pipe 31 into the generator, thus having completed the cycle.

The aqua umped into the generator is 26 ter the gas has. been separated in ammonia Baum.

. the first operation of heating the aqua am- ,monia in the generator, the weak li uor left is'19 Baum. This weak liquor is a owed to 'leavethe generator A and to pass through eeaelao the pipe 40, through the outer pipes of the exchanger 30 and thence by means of the I weak liquor cooler 33. Passing then through the pipe 34 into the absorber 26 it agam pipe 32, which connects therewith, to the v takes up or absorbs the gas coming from the cooler 25.

It will thus be seen that I have provided a device which dehydrates the ammonia gas,

and in the very operation of so doing, heats the 'aqua ammonia which-is to be again used for producing the ammonia gas. since the gas has been cooled by imparting its heat to the aqua ammonia, it doesnot reguirethesame amount of cooling in the conenser that it otherwise would, thus effecting a saving of water in the condenser. A still further saving is efiiected because of the pure condition of the dehydrated gas, which is far more eflicient for havin the moisture removed from it than for eing in'an impure state.

1 In an absorption refrigerating machine,

an ammonia gas generator, a dehydrating apparatus communicating therewith, comprising an outer water-jacket, a gas coolmg Moreover,

cylinder distpigsed therein, a coolm coil arranged wit said c linder, ba e plates within said cylinder or deflecting the gas sion coil, an absorber, means for forcing cooled aqua ammonia through said coolin coil, and means thereafter for returning sai aqua ammonia to the generator.

2. Tnan absorption refrigerating machine,

an ammonia gas generator, a dehydrating apparatus communicating therewith, comprising an outer water-jacket, a gas cooling cylinder dis osed therein a coolm coilarliin ba 6 plates ranged -wit said cfylinder, within said cylinder o r deflecting1 the gas from said generator against the wa s of said cooling pipe, a condenser, an expansion coil,

means for producing aqua ammonia from the gas coming from said expansion-coil, means 'coolingcoil, means for thereafter returnin said a ua ammonia to said generator, an

means or returning the condensed mo sture or forcing said aqua ammonia-through said v of the gascooling cylinder to said generator.' 7 3,. In an absorption refrigerating machine, 4

a horizontally arranged water-jac et havin inlet and outletjpipes, a cylinder susp'ende within said water-jacket centrally of the same, a cooling coilarranged withinsaid c l- 5 inder longitudinally thereof, a series of ba e plates Oprojecting upwardly from the bottom of sai cylinder, a second series of baflie plates pro ecting "downwardly from the top linder and arranged to alternate of said cy with the first mentioned-baffle plates, said bafie plates constituting deflecting and supporting members, a grou of ribbed defiecting plates inpne'end'o said cylinder,

as from said generator, a condenser, an expanplates.

ing ap aratus, the individual baffles of the emg arranged in close proximity with k said plates being arranged in close relation l with each other, an inlet pipe for gas at one end of said cylinder, an outlet pipe for gas at the other end of said cylinder, and an exit pipe for moisture arranged near said ribbed 4. In an absorption refrigerating machine, an external water-jacket, a cylinder disposed therein, a series of baflle plates arranged transversely of said cylinder, a cooling coil dis osed longitudinally within said 0 lindcr an having pipes arranged to pass tlirough and to be supported by said baffle plates, a group of ribbed bail'le plates in close relation with each other, heads for said cylinder, means for rendering said heads gas andwatertight, means for passing gas into and from said cylinder, and means for withdrawing condensed moisture from said cylinder.

5. In an absorption refrigerating machine, an external'water-jacket, a cooling cylinder arranged therein, a series of baflies extending transversely of said coolin cylinder, a cooling coil supported by said baffles, a group of ribbed baflies constituting an auxiliary coolgroup the ribs extending across the path of travel of the gas, means for passing as into and out of sald cylinder, and means or withdrawing l the condensed moisture therefrom.

6. In an absorption refrigerating machine, a water-jacket, a gas coo ing cylinder arranged therein, a cooling coil disposed within said cooling cylinder, a series of ba'llles within said cylinder for deflecting the gas back and forth transversel of said cooling coil and into contact wit 1 the sides thereof, and a group of auxiliary ribbed cooling plates, said plates being arranged closer toget ier to provide a tortuous passage for the gas, and the ribs thereof constituting a heat absorbing medium, means for passing gas into and out of said cooling cylinder, and means for Withdrawing moisture from said cylinder.

7. In an absorption refrigerating machine, a water-j acket, a gas cooling cylinder therein, a cooling coil within said cylinder, means for supplying said cooling coil with aqua ammonia, and a series of baflle late's arranged to deflect the gas against said cooling coil.

THEODORE J. KIRN.

Witnesses:

J. G. SwAn'rz, J. A. MAYER. 

